Analysis
- max time kernel
138s - max time network
145s - platform
windows7_x64 - resource
win7-en - submitted
03/09/2021, 03:18
General
- Target Transfer.exe
- Size 757KB
- Sample210903-dtmlhafban
- SHA256 82c48c73887a3f56ba4945e9265d9c616658b0f367d99e25d80df35beab5b6d7
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.aninditaeng.net
-
Port
587
-
Username
-
Password
t2weClGi1f~7Elps
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
mail.aninditaeng.net
-
Port
587
-
Username
-
Password
t2weClGi1f~7Elps
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Transfer.exe"C:\Users\Admin\AppData\Local\Temp\Transfer.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fZcdKoyV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7002.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Transfer.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/592-61-0x0000000000400000-0x0000000000426000-memory.dmp
memory/592-63-0x0000000000400000-0x0000000000426000-memory.dmp
memory/592-65-0x0000000001050000-0x0000000001051000-memory.dmp
memory/1076-53-0x00000000011D0000-0x00000000011D1000-memory.dmp
memory/1076-55-0x0000000000590000-0x0000000000591000-memory.dmp
memory/1076-56-0x0000000000430000-0x000000000043E000-memory.dmp
memory/1076-57-0x0000000001140000-0x00000000011BC000-memory.dmp
memory/1076-58-0x0000000000600000-0x0000000000637000-memory.dmp